I think the very words "cutting edge" are as ambiguous as it can be.
It has so many layers.
Preparation, technique, flavor combinations, mouth feel, etc, all things that make the food visually stunning and delicious.
How to cook a certain dish involves what heat source, what vessel to use, how sharp the knife, the best ingredients.
As the years go by, everyone, somewhere, somehow, wants to re-invent the wheel culinary wise to leave their mark and name.